OMAPL138如何在Linux下使用EDMA3驱动

yyj

: C' f8 V4 r; E! R0 ^" \0 ]% p

1. [code]EDMA sample test application
   
2. /*
   0 V$ ~1 T4 D% L. S7 [5 q
3. * edma_test.c
   
4. *
   & D8 S# m  l1 |' |$ m. d; u
5. * brief  EDMA3 Test Application
   8 j! l" V" H; E  |/ c# |. n' n7 ~' u4 Q
6. *
   
7. *   This file contains EDMA3 Test code.
   
8. *
   
9. *   NOTE: THIS FILE IS PROVIDED ONLY FOR INITIAL DEMO RELEASE AND MAY BE
   
10. *         REMOVED AFTER THE DEMO OR THE CONTENTS OF THIS FILE ARE SUBJECT
    7 V6 l$ \, y& `8 G9 K+ D0 {7 Y# m
11. *         TO CHANGE.
    
12. *
    
13. * Copyright (C) 2011 Texas Instruments Incorporated - http://www.ti.com/
    6 v0 i9 c9 f$ [, p) u1 d
14. *
    
15. * This program is free software; you can redistribute it and/or
    0 }: j$ q5 e6 Y. \& R: S
16. * modify it under the terms of the GNU General Public License as
    
17. * published by the Free Software Foundation version 2.
    
18. *
    
19. * This program is distributed "as is" WITHOUT ANY WARRANTY of any
    / }. f, i2 m  t* P
20. * kind, whether express or implied; without even the implied warranty
    0 f  Y( C/ p5 F( Q5 r' ~  S
21. * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
    - s' a9 r9 Q' m6 i$ L4 i/ ?5 ?
22. * GNU General Public License for more details.
    ! v0 f6 c4 h+ E( T8 t5 v$ J9 k; m
23. */
    
24. 
    # q; ^" [  l5 f5 H" G
25. #include <linux/module.h>
    
26. #include <linux/init.h>
    
27. #include <linux/errno.h>
    8 k. ~2 i. L# z* n) J
28. #include <linux/types.h>
    
29. #include <linux/interrupt.h>
    ( Q9 }) Z% q) E4 S
30. #include <asm/io.h>
    : g3 e- W( E! Q8 k- D
31. #include <linux/moduleparam.h>
    # T" v- b- u7 a$ Z$ U1 r
32. #include <linux/sysctl.h>
    2 k# G# s- b9 v. E# f: `- O
33. #include <linux/mm.h>
    5 R3 F. Y- r) O  ^+ F
34. #include <linux/dma-mapping.h>
    
35. 
    
36. #include <mach/memory.h>
    
37. #include <mach/hardware.h>
    
38. #include <mach/irqs.h>
    
39. #include <asm/hardware/edma.h>
    
40. 
    ) Z: G" r" I4 l  I# j. Q
41. #undef EDMA3_DEBUG
    * I0 w1 G( u- H) |3 T3 \& C
42. /*#define EDMA3_DEBUG*/
    5 e% L! i( }: s) Y  K+ n* Z
43. 
    6 `) V5 i, @9 G) v$ ], |+ v( B# c4 N
44. #ifdef EDMA3_DEBUG
    + i3 v! v) U3 J. Q
45. #define DMA_PRINTK(ARGS...)  printk(KERN_INFO "<%s>: ",__FUNCTION__);printk(ARGS)
    # G3 Q* i  n& l$ v$ @
46. #define DMA_FN_IN printk(KERN_INFO "[%s]: start\n", __FUNCTION__)
    
47. #define DMA_FN_OUT printk(KERN_INFO "[%s]: end\n",__FUNCTION__)
    % N( o5 o9 U# w- \% S6 I
48. #else
    - p5 |7 E$ l$ k. r- d! _
49. #define DMA_PRINTK( x... )
    8 a% v* r( F" e. i0 R
50. #define DMA_FN_IN
    
51. #define DMA_FN_OUT
    
52. #endif
    9 [. M" l' }5 s% b+ T( @) i9 x+ Q4 T
53. 
    
54. #define MAX_DMA_TRANSFER_IN_BYTES   (32768)
    
55. #define STATIC_SHIFT                3
    
56. #define TCINTEN_SHIFT               20
    
57. #define ITCINTEN_SHIFT              21
    
58. #define TCCHEN_SHIFT                22
    - `+ P, K: f6 z' g& r3 T2 G
59. #define ITCCHEN_SHIFT               23
    # T7 Z( ^% g& J7 X  g
60. 
    ' S' m1 j1 W( q1 N
61. static volatile int irqraised1 = 0;
    , {' b0 l, j* \3 N! n- \
62. static volatile int irqraised2 = 0;
    , G7 A+ K  c0 a8 h" \& \" r
63. 
    ( m- u$ t( E  D" }' t( U5 x/ @
64. int edma3_memtomemcpytest_dma(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);
    
65. int edma3_memtomemcpytest_dma_link(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);
    4 @* F+ x1 y, g/ E9 f3 E
66. int edma3_memtomemcpytest_dma_chain(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);
    " g! m! U8 w: G1 k- p* ?
67. 
    * Z' G) Y7 m- _1 ], E
68. dma_addr_t dmaphyssrc1 = 0;
    
69. dma_addr_t dmaphyssrc2 = 0;
    * c+ P  u, l" |' m: F
70. dma_addr_t dmaphysdest1 = 0;
    
71. dma_addr_t dmaphysdest2 = 0;
    # @# k' k/ E# g1 e6 x- M, d: w
72. 
    
73. char *dmabufsrc1 = NULL;
    . B, v) V: X6 a# N4 r7 g
74. char *dmabufsrc2 = NULL;
    
75. char *dmabufdest1 = NULL;
    
76. char *dmabufdest2 = NULL;
    
77. 
    
78. static int acnt = 512;
    
79. static int bcnt = 8;
    ; B- Z- W0 T* d- d: }
80. static int ccnt = 8;
    : {1 F" U& x6 h
81. 
    
82. module_param(acnt, int, S_IRUGO);
    
83. module_param(bcnt, int, S_IRUGO);
      z8 S& j3 [5 K* ?/ A
84. module_param(ccnt, int, S_IRUGO);

复制代码

& H" \! H8 |, m& q
      这是在TI上找到的一个针对Davanci处理器简单的EDMA3驱动程序测试例程的一部分，我在编译的过程中是用
arm-none-linux-gnueabi-gcc  -I /home/tl/omapl138/linux-3.3/arch/arm/include -I /home/tl/omapl138/linux-3.3/include  EDMA3test.cpp -o EDMA3这个命令来链接库文件进行编译，但是报的错误特别多，我又试着一个函数一个函数往进加，仍然是很多错误。
     我想问一下如何用一个简单的程序来测试一下EDMA3的驱动。
! \, |# Z& T/ i2 D* }! ?) r

1 y: M$ S) j3 R' Z( M( Q9 @! Z7 g